Web control mechanism



Get. 9, 1934. J E, UTH 1,976,440

WEB CONTROL MECHANI SM Filed Sept. 9, 1929 3,Sheets-Sheet 1 Gill 6;

Oct. 9, 1934. J EUTH 1,976,440

WEB CONTROL MECHANISM Filed Sept. 9, 1929 3 Sheets-Sheet 2 Oct. 9, 1934. J EUTH 1,976,440

WEB CONTROL MECHANI SM Filed Sept. 9, 1929 5 Sheets-Sheet s C d Z 28 my i k@ Patented-oer. 9, 1934 1,978,440 wnncomonmzcnmsm John E. Euth, Cincinnati, one, assi nora United Autographic Register 00., Chicago. 111., a corporation of Illinois Application September a, 1929, Serial No.3 91fi07 2 Claims. (or. 197-433) invention relates particularly to a webcontrol mechanism for duplicating machines of the type in which the paper web is carried over a fiat platen mounted between rails which support a typewriting machine, which cooperatesbroken vertical longitudinal section on an enlas ed scale taken as indicated at'line 3 Fig. 2; Fig. i, a view somewhat similar to Fig. 3, but on a smaller scale; Fig. 5, a. transverse vertical section taken as indicated at line of Fig.

9% 7'; Figs. 8 and 7 (Sheet 1) a longitudinal sectionel view taken as indicated at corresponding lines on Fig. 5; Fig. 8, a-broken perspective view.

oi the web-tensioning mechanism detached from the duplicating machine; and. Figs. 9 and 255 (Sheet 1) fragmentary views illustrating a cuttor-device which may be employed at the front end of the machine in lieu of the tear-oft device shown in Figs. 2 and 3..

The web-tensioning mechanism of the present y invention preferably comprises a' frame demounteblycarried by the arms of the duplicating machine which extend rearwardly from the platen; a slide in which are mounted a series of webguiding rolls or bars, equipped with web-tensioning devices: and means for actuatlngthe slide and causing the web-tensioning devices to stretch the webs taut across the platen when the slide returns to its normal position, after being drawn forwardly. v

In the preferred embodiment illustrated, A designates a frame comprising a standard A and a. surmounting horizontally disposed bed A; B, a platen mounted in the front portion of the bed; C, a typewriting machine on rails which form the ill main portions of the bed; and D, web-control mechanism mounted in the rear portion of the bed A I The duplicating machine comprising the frame A and the typewriter Q-mounted thereon are of well-known construction, The typewriter is mounted on longitudinal rails 1, having rears ward extensions, on arms i between winch the demountable device Dis supported. As shown in Figs. 2 and 3, the rails or longitudinal members are connected at their front ends by a strong cross-bar 2, which is equipped with pins or hooks 3 adapted to engageregister perforations with which the multiple strips of paper are provided.

The platen B is mounted in a manner usual in t is type of machine. It is shown depressed from the normal position in Fig. 3. Platen is normally held in the raised position by mechanism i actuated by a spring 5. Mechanism 4 is equipped with a lever 6 which is connected by a link 7 to a treadle or iootlever 8 which is sup- 1 ported on a pivot 9 carried by fixed arms 10 which project from a cross-bar or rod 11, which connects the members of .the standard A near their lower ends..

The mechanisms also includes a rock-shalt 12 having fixedly secured thereto bent arms 12 which are connected at their tree ends by a clamping-bar 12 which constitutes also a tearofi device. The bar 12' is providedwith perforations 13 which accommodate the hooks 3. when the bar is in the clamping position.

The typewriter C is capable of being moved forwardly and rearwardly on the track for linespacingand is capable of being fed transversely in the typing operation. 30

The web-control mechanism D comprises, in the illustration given, a fixedly mounted auxiliary frame 14 comprising hollow longitudinal frame members '14, a front cross-member 14" and a. rear cross-member 14; a series of transversely extending web-guides, or rods, 15 equipped with fixedly secured friction-members or friction plates 15*, the extremities oi the rods being shiftably mounted in longitudinal slots 16 with which the inner walls of the frame members 14 are provided, said rods 15 being. equipped at one end with controlling arms 15 (compare Figs. 8 and 7); longitudinally extending slide-bars 17 provided at their front ends with slots 1*? engaged by the extremities of a cross-bar 18, it being noted that the extremities of the guide-rods 15, after passing through the slots 16, are journalled in, the slides 17; a chain 19 connected with the cross-bar 18. the chain passing (Fig. 3) about a roller 20 mounted'on the front end frame 14, the chain being connected with the foot lever 8; a pair of slide bars 21 disposed beneath thetopwalls of the longitudinal frame members 14 and provided with slots 21 which engage the upper ends of the arms 15 and 15; and a series of springs 22 connecting the arms 15 with the slide-bars 17.

The longitudinal frame-members 14 are in the form of channel bars (Fig. 8) whose out-turned flanges form the top and bottom Walls of the hollow member, while the web-portion forms the inner wall of the hollow member. Removable outer side plates 14 close the channels, as will be understood from Figs. 5 and 8. The side plates are secured by means of studs 23 which project from the end-portions of the webs of the channel-members. These studs receive screws 23 which extend through the plates 14 The cross-rod 18 has reduced extremities 18' which engage the slots 17 of the slides 17. When the slides are drawn forwardly (see Fig. 8) until the slots 17 register with the offsets 16*, the crossbar 18 may be forcibly depressed was to lock the slides 1'7 in the advanced position. By reference to Figs. 6 and 7 it will be seen that the slides 17 normally are held in the retracted position by means of strong coil springs 24 which are attached at the points 24: to the slides 17 and are attached at the points 21 to studs with which the webportions of the channel bars are equipped. The web-portions of the channel members which form portions of the longitudinal.frame members 14. are equipped with headed studs 25 which engage guide slots 26 with which the slide bars 1'7 are provided.

The frame 14 is supported at its front end on short studs 27 which project inwardly from the arms 1; and the frame is supported at its rear end on a heavy cross-bar 28 which connects the arms 1. The auxiliary frame can be lifted out of the main frame, when desired.

When the slides 17 are drawn forwardly, the web-guides 15 and the mechanism controlling the rocking movement thereof move forwardly with the slides. In this action, the slides 21 are moved forward by reason of their engagement with the upper ends of the arms 15 and 15. .The slides 21 are capable of only limited movement, however. Thus, the upper walls of the hollow frame-members 14 are equipped with depending headed studs 29 which engage slots 30 with which the slides 21 are provided. After the slides 21 have moved the limited distance permitted by these connections, they then arrest the forward movement of the upper ends of the arms 15 and 15 and thus cause the web-guides 15 to rock in their bearings. The members 15 are in the nature of light clampingmembers. Each member 15 is attached at its rear portion to a. web-guide 15 and has its front portion overlapping and lightly clamping against the web-guide in advance. It will be understood that the springs 22 normally effect this clamping action. The action will be understood by comparing Figs. 3 and 82 The paper webs 31 may be drawn from any suitable source. In the illustration given, they are drawn from a single roll 31 supported in a suspended frame 32 which depends from a hanger 33 secured to members 34 which are attached to the longitudinal frame members 14. The suspended frame 32 is equipped with a tension device 32 adapted to exert a certain amount of friction upon the roll. The turning of the roll is accomplished by a pull exerted through the outermost strip, as will be understood from Fig. 1. The remaining strips drape somewhat or form loops between the roll and the web-guides.

The webs 31 pass upwardly from the roll and are threaded between the web-guides 15, as shown in Fig. 3, the webs then passing forwardly over the plate-like members 15 and thence across the platen. Webs are shown provided with registerperforations 31 These perforations are located at the ends of the forms and are adapted to engage the hooks 3 in the manner shown in Fig. 3.

Transversely extending carbon strips 35 are shown interleaved with the paper webs. The carbo'n strips may be supplied in any desired manner, however.

In Fig. 2, the machine is shown equipped with fixed clamps 36 which co-act with the platen to clamp the paper webs when the platen is returned to normal position. I

From the description given, it will be understood that when it is desired to draw the paper webs forwardly to bring a fresh form over the platen, the operator, by depressing the foot lever 8, shown in Fig. 1, lowers the platen B and raises the clamp-knife 12 In this action, the webguides and'controlling mechanism are automatically drawn forward and the paper-webs are released. After the webs are drawn forwardly to bring a fresh form over the platen, the mentor releases the pedal, permitting the clamp-knife 12 to return to its normal position. In this action, the springs 24 retract the slides 17 and return the web-guides 15 to their normal position. Immediately after the slides 1'7 start to move rearwardly, the springs 22 actuate the web-guides 15 in such manner as to cause the plates 15 to clamp the paper lightly between them and the preceding guide-members 15; and thus, while the slides 17 are completing the return to normal position, the web-guides, because of their frictional engagement with the webs, cause the webs to be drawn taut across the platen.

It is understood, of course, that the webs, after being drawn forwardly to bring a fresh form over the platen are hooked over the hooks 3; and after the knife 13 has been permitted to return to the clamping position the operator tears the issued tickets from the strips, using the shearing edge of the bar 12 for this purpose.

The construction described provides for the automatic release of the paper webs in the action of unclamping the portions of the webs which are disposed over the platen; and the construction provides further for the automatic stretching of the strips across the platen by the return movement of the web-guides while the platen is being returned to normal position and the webs clamped thereon.

Referring to the modification shown in Figs. 9 and 10, the front ends of the members 1 are fixedly united by a cross-bar 2*, with which coacts a clamping member 12 which constitutes also a shear-member. A rotatable'shear-member 37 is journalled in the front ends of the members 1, and is equipped with an actuating lever 37. The lever 37* is equipped with a spring 38 which normally holds the shear-member 37 in the position shown in Fig. 9. The member 37 has a shearing edge 37 which has a high point at the center and tapers in both directions therefrom, so that when the paper is sheared it is first pierced at the center and then sheared in both directions therefrom. The modified form of device for severing the paper webs may be employed in lieu of the tear-off device shown in Fig. 3.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new, and desire to secure by Letters Patent, is:

1. In means of the character set forth: a platen and co-acting web-clamping means, an actuator for effecting relative movement between the platen and associated clamping means; a frame in which said platen is mounted having arms exhollow members having engagement with said arms, said auxiliary slides having limited movementsndservlnstoaotuate'thearmsszainsttlie Some of their sprinzs to etteot release oi the s pper-members.

2. web-tensioninz mechanism comprising a frame having hollow longitudinal members; slides mounted in said hollow members; web-grippers slidably mounted in ssld hollow members and iournaled in said slides; sprinzs adapted to retract said slides; spring-actuated arms connected with said web-grippers and adapted to effect psi-- tiel rotation thereof; and similar! slides having limitedmovementandservingtoeflectrockinaoi said web-guides durlnz the fins! portion of tlie iorward movement oi said auxiliary slides.

JOHN E. m.

III

Ill 

